In early 2014, Jarryd Salem and Alesha Bradford left their native Australia to backpack from Thailand to South Africa without taking a single flight.

Since then, they've spent most of their time on the road, traveling everywhere from Mongolia to Vietnam to Tajikistan.

And they do it on a budget.

Over the course of a year traveling through Thailand, myanmar national airlines, Laos, Cambodia, Vietnam, and four days in Singapore, they spent a total of USD $26,209 - an average of about $72 per day, or about $36 per person, per day.

They keep track of their spending "the old fashioned way," by writing their expenditures in cash and cross-checking that with their bank accounts. Day-to-day, they do all their spending in cash, using an Australian Citibank account that allows them to take money from ATMs without incurring fees.